Got new HTC 1 issues with WIFI CALLING

I got a brand new HTC One phone with 4.1.2 on it. It works fine when I use cellular but on WIFI my WIFI calling keeps going in and out of enabling to poor WIFI signal. I have this issue at work and any place I go with WIFI. This happens on a open or secured network. A friend of mine who also has T-mobile has a S3 phone and had the same exact issue but Samsung found a fix by typing in on the number pad *#0011# then changing a setting. They have to turn off the WIFI screen saver. Is there a way to fix this issue on the HTC One? On my friends phone when he was on 4.1.1 everything worked great.

I cannot get onto the internet, get text or email or take and make calls.

I did that and I was already set to 'Alway'.
Do you know what to type in on the key pad to get to teh screen to turn off wifi power saver? My friends Samsung works fine now. But the samsung code does not work for HTC phones.

If you talk to the right people at Tmo, they will tell you that is a "feature". "We make our Wifi shut off when not in use to save battery".

Doesn't matter that you need Wifi on to accept a call. They think this is a good thing.

Unless HTC can send a "fix", you are out of luck. This is set from Tmo, one of their "enhancements to the OS.

On my One S at the first JB update, they forgot to add this "feature" and my phone worked GREAT for about a week, then they came out with a patch. Didn't tell you what the patch was, just download it to solve several "bugs"..... BAM Wifi calling goes to **** again. Called TMo, "yeah, that feature was missed. That's why we sent the patch. to fix it"